Displacement Detection Circuit and Method Thereof

2. The displacement detection method according to claim 1, wherein said at least one direction comprises a first direction and a second direction, and wherein said motion detection indicates said first direction if said auxiliary average bigger than said main average shifts in a primary direction, or if said auxiliary average bigger than said main average shifts in a secondary direction.

3. The displacement detection method according to claim 1, wherein said auxiliary average comprises one average of said first column, one average of said second column and one average of said third column, and which comprises one quantification of said displacement configured to quantify the height of the displacement according to the number of said auxiliary average bigger than a main average shifts in said at least one direction among said primary direction and said secondary direction.

4. The displacement detection method according to claim 1, which comprises a zero setting; said zero setting sets an actual displacement value on said surface equal to a set displacement value of said pointing device.

5. The displacement detection method according to claim 4, wherein said motion detection comprises a height calculation of said pointing device in accordance with said zero setting.

6. The displacement detection method according to claim 5, wherein said height calculation comprises a correction of the actual displacement value at a height in accordance with said set displacement value of said pointing device.

8. The displacement detection circuit according to claim 7, wherein said direction comprises a first direction and a second direction, and wherein said motion detector is configured to indicate said first direction if said auxiliary average is bigger than said main average shifts in said primary direction, or if said auxiliary average is bigger than said main average shifts in said secondary direction.

9. The displacement detection circuit according to claim 7, wherein said motion detector is configured to quantify the height of the displacement when said auxiliary average is bigger than said main average shifts in said direction among said primary direction and said secondary direction.

10. A pointing device comprising at least one displacement detection circuit according to claim 7.